Question: Which is the Zamenhof-Esperanto object for the language used of Esperanto?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P2936 wd:Q143 . ?sbj wdt:P31 wd:Q75762 } 
Answer: Bona Espero, International Esperanto Institute, Esperanto-Domo